Home / 3,779.60-5,669.40-1,147.10

Finding the Fourth Proportional to 3,779.60, 5,669.40 and 1,147.10

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Solution

The fourth proportional to 3,779.60, 5,669.40 and 1,147.10 is: 1,720.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.60 : 5,669.40 = 1,147.10 : x
  2. Step 2: Convert to fraction form
    3,779.60/5,669.40 = 1,147.10/x
  3. Step 3: Cross multiply
    3,779.60x = 5,669.40 × 1,147.10
  4. Step 4: Simplify right side
    3,779.60x = 6,503,368.74
  5. Step 5: Solve for x
    x = 6,503,368.74/3,779.60
  6. Step 6: Final answer
    x = 1,720.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.